// Establish an ordering from lockB -> lockC
    lockB.lock();
    lockC.lock();
    lockB.unlock();
    lockC.unlock();

    // lockC -> writeLockA should fail.
    lockC.lock();
    PotentialDeadlockException expected =
        assertThrows(PotentialDeadlockException.class, () -> writeLockA.lock());
    checkMessage(expected, "LockC -> ReadWriteA", "LockB -> LockC", "ReadWriteA -> LockB");
  }

    // Establish an ordering from lockB -> lockC
    lockB.lock();
    lockC.lock();
    lockB.unlock();
    lockC.unlock();

    // lockC -> writeLockA should fail.
    lockC.lock();
    PotentialDeadlockException expected =
        assertThrows(PotentialDeadlockException.class, () -> writeLockA.lock());
    checkMessage(expected, "LockC -> ReadWriteA", "LockB -> LockC", "ReadWriteA -> LockB");
  }